OpenStack Security Advisory: 2013-032 CVE: CVE-2013-6391 Date: December 11, 2013 Title: Keystone trust circumvention through EC2-style tokens Reporter: Steven Hardy (Red Hat) Products: Keystone Affects: Havana and later

Description: Steven Hardy from Red Hat reported a vulnerability in Keystone trusts when used in conjunction with the ec2tokens API. By generating EC2 credentials using a trust-scoped token, a trustee may retrieve a token not scoped to the trust, therefore elevating privileges to all of the trustor's roles. Only Keystone setups enabling EC2-style authentication are affected.

Icehouse (development branch) fix: https://review.openstack.org/61419

Havana fix: https://review.openstack.org/61425

Notes: This fix will be included in the icehouse-2 development milestone and in a future 2013.2.1 release.

References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6391 https://launchpad.net/bugs/1242597